Sayan Datta

<p>It is a very lightweight plugin for customizing WordPress header, add custom code and enable, disable or remove the unwanted meta tags and links from the source code on a WordPress site. It is a simple plugin that lets you insert code like Google Analytics, custom CSS, Facebook Pixel, and more to your WordPress site header and footer. No need to edit your theme files!</p>
<p>The simple interface of the Easy Header Footer plugin gives you one place where you can insert scripts, rather than dealing with dozens of different plugins.</p>
<h3>Features – What does this plugin do?</h3>
<ul>
<li>Quick to set up</li>
<li>Simple to insert scripts and styles.</li>
<li>Supports <strong>Official AMP</strong> Plugin.</li>
<li>Allows PHP Execution.</li>
<li>Insert <strong>header code and/or footer code</strong></li>
<li>Add <strong>Google Analytics</strong> code to any theme</li>
<li>Add <strong>custom CSS</strong> across themes</li>
<li>Insert <strong>Facebook pixel code</strong></li>
<li>Insert any code or <strong>script, including HTML and Javascript</strong></li>
<li>Remove different <strong>WordPress meta tags</strong> from wp head.</li>
<li>Disable <strong>JSON, Rest API, Feed and XML-RPC</strong> functionality.</li>
<li>Add some <strong>security headers</strong> and <strong>disable user enumeration</strong> to <strong>prevent brute force attacks</strong>.</li>
<li><strong>Minification of HTML, CSS and JS</strong> code.</li>
<li>Remove version number from scripts and css files.</li>
</ul>
<h4>Compatibility</h4>
<ul>
<li>This plugin is fully compatible with WordPress Version 4.6 and beyond and also compatible with any WordPress theme.</li>
</ul>
<h4>Support</h4>
<ul>
<li>Community support via the <a href="https://wordpress.org/support/plugin/remove-wp-meta-tags" rel="ugc">support forums</a> at WordPress.org.</li>
</ul>
<h4>Contribute</h4>
<ul>
<li>Active development of this plugin is handled <a href="https://github.com/iamsayan/remove-wp-meta-tags/" rel="nofollow ugc">on GitHub</a>.</li>
<li>Feel free to <a href="https://github.com/iamsayan/remove-wp-meta-tags/" rel="nofollow ugc">fork the project on GitHub</a> and submit your contributions via pull request.</li>
</ul>
<p>Like Easy Header Footer plugin? Consider leaving a <a href="https://wordpress.org/support/plugin/remove-wp-meta-tags/reviews/?rate=5#new-post" rel="ugc">5 star review</a>.</p>


Easy Header Footer – Speedup, Security and Minify

It is a very lightweight plugin for customizing WordPress header, add custom code and enable, disable or remove the unwanted meta tags and links from  …

Anand Kumar

Digital Liberation

<p>If you are running a WordPress site then sooner or later you need to insert some kind of code to your website. It is most likley a web analytics code like Google Analytics or may be social media script or some CSS stylesheet or may be Custom fonts. This plugin will do all the magic. Even if you want to insert those codes in a custom post type.</p>
<p>All you have to do is adding appropriate html code.</p>
<p>Don’t forget to wrap your code with proper tags.</p>
<pre><code><script type="text/javascript">
YOUR JS CODE HERE
</script>
</code></pre>
<p>Or for CSS:</p>
<pre><code><style type="text/css">
YOUR CSS CODE HERE
</style>
</code></pre>
<h4>Why use this plugin:</h4>
<ul>
<li>To insert CSS and JavaScript codes to <code><head></code> or before <code></body></code>.</li>
<li>To insert code to <code><head></code> of any single page or post.</li>
<li>To insert code to Custom Post Type [New Feature].</li>
</ul>
<p>The plugin should be compatible with WooCommerce.</p>
<h4>What it does not offer</h4>
<ul>
<li>You can’t insert/execute PHP codes.</li>
</ul>
<p>Almost all WordPress theme do support this “Header and Footer Scripts” plugin. If the codes are not appearing in your site [ask for support] or look at your theme file if they have standard <code>wp_head</code> and <code>wp_footer</code> hooks.</p>
<h4>Important Links</h4>
<p>For furhter information you are welcomed to follow these links:</p>
<ul>
<li><strong><a href="https://github.com/anandkumar/header-and-footer-scripts/wiki" rel="nofollow ugc">Read Documentation</a></strong></li>
<li><strong><a href="https://wordpress.org/support/plugin/header-and-footer-scripts/" rel="ugc">Get Support</a></strong></li>
<li><strong><a href="https://github.com/anandkumar/header-and-footer-scripts" rel="nofollow ugc">GitHub Repository</a></strong></li>
</ul>


Header and Footer Scripts

good

Como es posible que al desinstalar el plugin, si no has borrado el script te deje el código ahi metido. Y luego a averiguar de donde vienen los errores. 

Al desinstalar te deja el código

Header and Footer Scripts plugin allows you to add scripts to WordPress site's  and just before closing  tag.

Easy Header Footer – Speedup, Security and Minify vs Header and Footer Scripts